package com.bdqn.t320.ch12.config.shiro;

import at.pollux.thymeleaf.shiro.dialect.ShiroDialect;
import com.bdqn.t320.ch12.entity.Right;
import com.bdqn.t320.ch12.service.RoleService;
import org.apache.shiro.mgt.SecurityManager;
import org.apache.shiro.spring.security.interceptor.AuthorizationAttributeSourceAdvisor;
import org.apache.shiro.spring.web.ShiroFilterFactoryBean;
import org.apache.shiro.web.mgt.DefaultWebSecurityManager;
import org.springframework.aop.framework.autoproxy.DefaultAdvisorAutoProxyCreator;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import javax.annotation.Resource;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;

@Configuration
public class ShiroConfig {

    @Resource
    RoleService roleService;


    @Bean
    public DefaultAdvisorAutoProxyCreator advisorAutoProxyCreator() {
        DefaultAdvisorAutoProxyCreator advisorAutoProxyCreator = new DefaultAdvisorAutoProxyCreator();
        advisorAutoProxyCreator.setProxyTargetClass(true);
        return advisorAutoProxyCreator;
    }

    @Bean
    public AuthorizationAttributeSourceAdvisor authorizationAttributeSourceAdvisor(
            SecurityManager securityManager) {
        AuthorizationAttributeSourceAdvisor authorizationAttributeSourceAdvisor = new AuthorizationAttributeSourceAdvisor();
        authorizationAttributeSourceAdvisor.setSecurityManager(securityManager);
        return authorizationAttributeSourceAdvisor;
    }


    @Bean
    public SecurityManager securityManager() { //安全管理器 SecurityManager
        DefaultWebSecurityManager securityManager = new DefaultWebSecurityManager();
        //注入 Realm
        securityManager.setRealm(myShiroRealm());
        return securityManager;
    }

    @Bean
    public MyShiroRealm myShiroRealm() { //自定义 Realm
        //MyShiroRealm shiroRealm = new MyShiroRealm();
        return new MyShiroRealm();
    }

    @Bean(name = "shiroDialect")
    public ShiroDialect shiroDialect() {//thymeleaf 页面上使用 shiro 标签
        return new ShiroDialect();
    }

    @Bean
    public ShiroFilterFactoryBean shiroFilterFactory(SecurityManager securityManager) {//Shiro 过滤器：权限验证
        //Shiro 过滤器：权限验证
        ShiroFilterFactoryBean shiroFilterFactory = new ShiroFilterFactoryBean();
        //注入 SecurityManager
        shiroFilterFactory.setSecurityManager(securityManager);

        //权限验证：使用 Filter 控制资源(URL)的访问
        shiroFilterFactory.setLoginUrl("/");  //登录的地址，登录失败的地址
        shiroFilterFactory.setSuccessUrl("/main");  //登录成功的页面
        shiroFilterFactory.setUnauthorizedUrl("/403"); //没有权限跳转 403 页面

        Map<String, String> filterChainDefinitionMap = new LinkedHashMap<String, String>();//必须使用 LinkedHashMap(有序集合)
        //配置可以匿名访问的资源(URL)：静态资源
        filterChainDefinitionMap.put("/css/**", "anon");
        filterChainDefinitionMap.put("/fonts/**", "anon");
        filterChainDefinitionMap.put("/images/**", "anon");
        filterChainDefinitionMap.put("/js/**", "anon");
        filterChainDefinitionMap.put("/localcss/**", "anon");
        filterChainDefinitionMap.put("/localjs/**", "anon");

        filterChainDefinitionMap.put("/login", "anon");
        filterChainDefinitionMap.put("/dologin", "anon");

        filterChainDefinitionMap.put("/logout", "logout");//注销过滤器，自动注销

        //配置需要特定权限才能访问的资源(URL)
        //静态授权：包括全部需要特定权限才能访问的资源(URL)
//        filterChainDefinitionMap.put("/user/list", "perms[用户列表]");
//        filterChainDefinitionMap.put("/user/add", "perms[用户添加]");
//        filterChainDefinitionMap.put("/user/edit", "perms[用户编辑]");
//        filterChainDefinitionMap.put("/user/del", "perms[用户删除]");
//        filterChainDefinitionMap.put("/user/getrolelist", "perms[用户列表]");
        // 动态授权
        List<Right> rights = roleService.findAllRights();
        for (Right right : rights) {
            if (right.getRightUrl() != null && !right.getRightUrl().trim().equals("")) {
                filterChainDefinitionMap.put(right.getRightUrl(), "perms[" + right.getRightCode() + "]");
            }
        }

        //配置认证访问：其他资源(URL)必须认证通过才能访问
        filterChainDefinitionMap.put("/**", "authc"); //必须放在过滤器链的最后面

        shiroFilterFactory.setFilterChainDefinitionMap(filterChainDefinitionMap);
        return shiroFilterFactory;
    }

}
